In a spiritual biography of America, Delbanco shows how writers of the past 3 centuries have depicted evil and how they have tried to defy and subdue it. He shows the strategies by which writers such as Cotton Mather, Jefferson and Lincoln, Emerson and Melville, Thoreau and Whitman, Niebuhr and Trilling, Rachel Carson and Susan Sontag, have recognized and done battle with evil. One way of talking about evil is to demonize and satanize it, understanding...